World War IIBelligerentsAlliesAxisCommanders and leadersMain Allied leaders:Joseph StalinFranklin D. RooseveltWinston ChurchillChiang Kai-shekMain Axis leaders:Adolf HitlerHirohitoBenito MussoliniCasualties and losses 60–75 million deaths (military and civilian) World War II, or the Second World War (1 September 1939 – 2 September 1945), was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many engaging in total war on an unprecedented scale...
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